Sets out the explosion protection requirements for diesel engine systems designed for safe operation in underground coal mines, including use in explosion-risk zones. Also addresses inadvertent short-term exposure to high methane levels and any consequent uncontrolled combustion.
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.4 New designs and innovations
2 Hazard identification and control
2.1 Ignition hazard assessment
2.2 Fire hazard
2.3 Ignition control measures
2.3.1 General
2.3.2 Safety functions
2.3.3 Risk reduction required
2.3.4 Assessment and validation
2.3.5 Safety components
3 Design and construction
3.1 Engine types
3.2 Condition monitoring
3.3 Surface temperature
3.4 Materials
3.4.1 Non-metallic materials
3.4.2 Light metals
3.4.3 External thermal insulation
3.5 Flexible metallic pipes
3.6 Joints
3.6.1 Designation
3.6.2 Fixed connection
3.6.3 Open joints
3.7 Transmission belts
3.8 Engine breather
3.9 Starting aids
3.10 Fuel systems
3.11 Air inlet systems
3.11.1 General
3.11.2 Flame propagation
3.11.3 Structural integrity
3.12 Air compressors
3.13 Cooling systems
3.14 Ignition control measures
3.14.1 Emergency stop safety function
3.14.2 Methane shutdown safety function
3.14.3 Manual fuel shut-off valve
3.14.4 Engine start and restart
3.15 Exhaust systems
3.15.1 General
3.15.2 Flame propagation
3.15.3 Structural integrity
3.15.4 Required equipment
3.15.5 Exhaust flame arrester
3.15.5.1 General
3.15.5.2 Water-based flame arresters
3.15.5.3 Make-up tank water flow
3.15.6 Spark arrester
3.15.7 Exhaust cooling systems
3.15.7.1 General
3.15.8 Replaceable element-type particulate filter system
